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http://dx.doi.org/10.5369/JSST.2014.23.5.310

Vapor Detection of ssDNA Decorated Graphene Transistor  

Jung, Youngmo (Sensor System Research center, Korea Institute of Science and Technology)
Kim, Young Jun (Sensor System Research center, Korea Institute of Science and Technology)
Moon, Hi Gue (Sensor System Research center, Korea Institute of Science and Technology)
Kim, Soo Min (Sensor System Research center, Korea Institute of Science and Technology)
Shin, Beomju (Sensor System Research center, Korea Institute of Science and Technology)
Lee, Joo Song (Sensor System Research center, Korea Institute of Science and Technology)
Seo, Minah (Sensor System Research center, Korea Institute of Science and Technology)
Lee, Taikjin (Sensor System Research center, Korea Institute of Science and Technology)
Kim, Jae Hun (Sensor System Research center, Korea Institute of Science and Technology)
Jun, Seong Chan (School of Mechanical Engineering, Yonsei University)
Lee, Seok (Sensor System Research center, Korea Institute of Science and Technology)
Kim, Chulki (Sensor System Research center, Korea Institute of Science and Technology)
Publication Information
Journal of Sensor Science and Technology / v.23, no.5, 2014 , pp. 310-313 More about this Journal
Abstract
We report a way to improve the ability of graphene to operate as a gas sensor by applying single stranded deoxyribonucleic acid (DNA). The sensitivity and recovery of the DNA-graphene sensor depending on the different DNA sequences are analyzed. The different sensor responses to reactive chemical vapors are demonstrated in the time domain. Because of the chemical gating effect of the deposited DNA, the resulting devices show complete and rapid recovery to baseline unlike the bare graphene at room temperature. The application of the pattern recognition technique can increase the potential of DNA-graphene sensors as a chemical vapor classifier.
Keywords
Gas sensors; Graphene; DNA; $NO_2$; $NH_3$; Sensitivity; Recovery;
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